Pseuderanthemum carruthersii, commonly known as Carruthers' Falseface, is an attractive evergreen shrub belonging to the family Acanthaceae. This species is recognized for its ornamental foliage and is often cultivated in tropical and subtropical regions for its aesthetic appeal. The growth habit of Pseuderanthemum carruthersii is that of an upright, somewhat spreading shrub, typically reaching heights of 1 to 2 meters. Its stems are generally smooth and somewhat succulent. The leaves are the most striking feature of this plant, being opposite, ovate to elliptic in shape, and measuring approximately 7 to 15 centimeters in length and 4 to 8 centimeters in width. Leaf coloration can vary, with some forms displaying a deep green, while others exhibit striking variegation, often with creamy white or pale yellow margins or blotches. This variegation contributes significantly to its ornamental value. The flowers are borne in terminal or axillary spikes and are typically small and tubular, with five petals. They are usually white, often with purple or crimson markings in the throat. Flowering can occur sporadically throughout the year in suitable climates. The fruit is a capsule, which is rarely conspicuous. Pseuderanthemum carruthersii is native to the islands of the western Pacific, including Fiji, Samoa, and Tonga. It thrives in its natural habitat in humid, lowland tropical forests, often found in shaded understory environments or along forest edges. In cultivation, it prefers well-drained soil and thrives in partial shade to full sun, although it performs best with some protection from intense midday sun, especially in hotter climates. It is sensitive to frost and is therefore best suited for tropical and subtropical gardens or as a houseplant in cooler regions. Regular watering is beneficial, particularly during dry periods, but waterlogged conditions should be avoided. While primarily valued for its ornamental qualities, Pseuderanthemum carruthersii has no widely documented medicinal, culinary, or economic uses. Its significance lies almost entirely in its horticultural appeal, providing a lush, tropical aesthetic with its distinctive foliage. The plant's ability to tolerate a range of light conditions, from bright shade to filtered sun, makes it a versatile choice for landscaping in suitable climates. Its variegated forms, in particular, offer a vibrant contrast to other green foliage plants. An interesting characteristic of Pseuderanthemum carruthersii is its adaptability to different light levels, which influences the intensity of its leaf variegation. In brighter light, the variegation tends to be more pronounced, while in deeper shade, the leaves may appear more uniformly green. This characteristic allows gardeners to manipulate its appearance to some extent by selecting its placement. The plant is also known to be relatively low-maintenance once established, making it a popular choice for both novice and experienced gardeners seeking to add a touch of the tropics to their surroundings.